Here are preliminary results of the bibliometric mapping of the 2022 Luxembourg research evaluation. Its purpose is:
The method for the research-field-mapping can be reiviewed here:
The seed articles deemed representative for the active areas of research in the institution, and include authors affiliated with the institution. They can be selected in three ways:
The present analysis is based on the following seed articles:
| AU | PY | TI | JI |
|---|---|---|---|
| BENGASI G;DESPORT JS;BABA K… | 2020 | MOLECULAR FLATTENING EFFECT TO ENHANCE THE CONDUCTIVITY OF FUSED PORPHYRIN TAPE THIN FILMS | RSC ADV. |
| ZHAO HJ;ÍÑIGUEZ J | 2019 | CREATING MULTIFERROIC AND CONDUCTIVE DOMAIN WALLS IN COMMON FERROELASTIC COMPOUNDS | NPJ COMPUTATIONAL MATER. |
| CHEN P;GRISOLIA MN;ZHAO HJ;… | 2018 | ENERGETICS OF OXYGEN-OCTAHEDRA ROTATIONS IN PEROVSKITE OXIDES FROM FIRST PRINCIPLES | PHYS. REV. B |
| GIUNTA G;DE PIETRO G;NASSER… | 2016 | A THERMAL STRESS FINITE ELEMENT ANALYSIS OF BEAM STRUCTURES BY HIERARCHICAL MODELLING | COMPOS PART B: ENG |
Here, we report the results of a LDA topic-modelling (basically, clustering on words) on all title+abstract texts.
Note: While this static vies is helpful, I recommend using the interactive LDAVis version to be found under https://daniel-hain.github.io/biblio_lux_2022/output/topic_modelling/LDAviz_list_mrt.rds/index.html#topic=1&lambda=0.60&term=. For functionality and usage, see technical description in the next tab.
Topic modeling is a type of statistical modeling for discovering the abstract “topics” that occur in a collection of documents. Latent Dirichlet Allocation (LDA) is an example of topic model and is used to classify text in a document to a particular topic.
LDA is a generative probabilistic model that assumes each topic is a mixture over an underlying set of words, and each document is a mixture of over a set of topic probabilities. It builds a topic per document model and words per topic model, modeled as Dirichlet distributions.
LDAvis is a web-based interactive visualisation of topics estimated using LDA. It provides a global view of the topics (and how they differ from each other), while at the same time allowing for a deep inspection of the terms most highly associated with each individual topic. The package extracts information from a fitted LDA topic model to inform an interactive web-based visualization. The visualisation has two basic pieces.
The left panel visualise the topics as circles in the two-dimensional plane whose centres are determined by computing the Jensen–Shannon divergence between topics, and then by using multidimensional scaling to project the inter-topic distances onto two dimensions. Each topic’s overall prevalence is encoded using the areas of the circles.
The right panel depicts a horizontal bar chart whose bars represent the individual terms that are the most useful for interpreting the currently selected topic on the left. A pair of overlaid bars represent both the corpus-wide frequency of a given term as well as the topic-specific frequency of the term.
The \(\lambda\) slider allows to rank the terms according to term relevance. By default, the terms of a topic are ranked in decreasing order according their topic-specific probability ( \(\lambda\) = 1 ). Moving the slider allows to adjust the rank of terms based on much discriminatory (or “relevant”) are for the specific topic. The suggested optimal value of \(\lambda\) is 0.6.
Note: This analysis refers the co-citation analysis,
where the cited references and not the original publications are the
unit of analysis. See tab Technical descriptionfor
additional explanations
In order to partition networks into components or clusters, we deploy a community detection technique based on the Lovain Algorithm (Blondel et al., 2008). The Lovain Algorithm is a heuristic method that attempts to optimize the modularity of communities within a network by maximizing within- and minimizing between-community connectivity. We identify the following communities = knowledge bases.
| com | name | dgr_int | dgr |
|---|---|---|---|
| Knowledge Base 1: KB 1 (n = 1821, density =4.6) | |||
| 1 | KRESSE G. FURTHMÜLLER J. (1996) | 10244 | 10264 |
| 1 | KRESSE G. JOUBERT D. (1999) | 9931 | 9955 |
| 1 | BLÖCHL P.E. (1994) | 8758 | 8780 |
| 1 | PERDEW J.P. BURKE K. ERNZERHOF M. (1996) | 7380 | 7440 |
| 1 | PERDEW J.P. RUZSINSZKY A. CSONKA G.I. VYDROV O.A. SCUSERIA G.E. CONSTANTIN L.A. ZHOU X. BURKE K. (2008) | 3878 | 3888 |
| 1 | DUDAREV S.L. BOTTON G.A. SAVRASOV S.Y. HUMPHREYS C.J. SUTTON A.P. (1998) | 3694 | 3697 |
| 1 | KRESSE G. HAFNER J. (1993) | 3658 | 3658 |
| 1 | MOMMA K. IZUMI F. (2011) | 3166 | 3169 |
| 1 | MONKHORST H.J. PACK J.D. (1976) | 3011 | 3017 |
| 1 | HOHENBERG P. KOHN W. (1964) | 2855 | 2872 |
| Knowledge Base 2: KB 2 (n = 1218, density =6.35) | |||
| 2 | BLÖCHL P.E. PROJECTOR AUGMENTED-WAVE METHOD (1994) | 7255 | 7312 |
| 2 | KRESSE G. JOUBERT D. FROM ULTRASOFT PSEUDOPOTENTIALS TO THE PROJECTOR AUGMENTED-WAVE METHOD (1999) | 7187 | 7236 |
| 2 | KRESSE G. FURTHMÜLLER J. EFFICIENT ITERATIVE SCHEMES FOR AB INITIO TOTAL-ENERGY CALCULATIONS USING A PLANE-WAVE BASIS SET (1996) | 6661 | 6709 |
| 2 | PERDEW J.P. BURKE K. ERNZERHOF M. GENERALIZED GRADIENT APPROXIMATION MADE SIMPLE (1996) | 5640 | 5744 |
| 2 | KRESSE G. FURTHMÜLLER J. EFFICIENCY OF AB-INITIO TOTAL ENERGY CALCULATIONS FOR METALS AND SEMICONDUCTORS USING A PLANE-WAVE BASIS SET (1996) | 2882 | 2898 |
| 2 | KRESSE G. HAFNER J. AB INITIO MOLECULAR DYNAMICS FOR LIQUID METALS (1993) | 2297 | 2303 |
| 2 | MONKHORST H.J. PACK J.D. SPECIAL POINTS FOR BRILLOUIN-ZONE INTEGRATIONS (1976) | 2187 | 2193 |
| 2 | MOMMA K. IZUMI F. VESTA 3 FOR THREE-DIMENSIONAL VISUALIZATION OF CRYSTAL VOLUMETRIC AND MORPHOLOGY DATA (2011) | 2125 | 2138 |
| 2 | KOHN W. SHAM L.J. SELF-CONSISTENT EQUATIONS INCLUDING EXCHANGE AND CORRELATION EFFECTS (1965) | 1986 | 1993 |
| 2 | DUDAREV S.L. BOTTON G.A. SAVRASOV S.Y. HUMPHREYS C.J. SUTTON A.P. ELECTRON-ENERGY-LOSS SPECTRA AND THE STRUCTURAL STABILITY OF NICKEL OXIDE: AN LSD… | 1865 | 1872 |
| Knowledge Base 3: KB 3 (n = 739, density =9.47) | |||
| 3 | CARRERA E. THEORIES AND FINITE ELEMENTS FOR MULTILAYERED PLATES AND SHELLS: A UNIFIED COMPACT FORMULATION WITH NUMERICAL ASSESSMENT AND BENCHMARKIN… | 2194 | 2194 |
| 3 | CARRERA E. THEORIES AND FINITE ELEMENTS FOR MULTILAYERED ANISOTROPIC COMPOSITE PLATES AND SHELLS (2002) | 1176 | 1176 |
| 3 | CARRERA E. PETROLO M. REFINED BEAM ELEMENTS WITH ONLY DISPLACEMENT VARIABLES AND PLATE/SHELL CAPABILITIES (2012) | 899 | 899 |
| 3 | CARRERA E. CINEFRA M. PETROLO M. ZAPPINO E. FINITE ELEMENT ANALYSIS OF STRUCTURES THROUGH UNIFIED FORMULATION (2014) | 787 | 787 |
| 3 | CARRERA E. GIUNTA G. PETROLO M. (2011) | 785 | 785 |
| 3 | CARRERA E. HISTORICAL REVIEW OF ZIG-ZAG THEORIES FOR MULTILAYERED PLATES AND SHELLS (2003) | 633 | 633 |
| 3 | CARRERA E. GIUNTA G. NALI P. PETROLO M. REFINED BEAM ELEMENTS WITH ARBITRARY CROSS-SECTION GEOMETRIES (2010) | 620 | 620 |
| 3 | CARRERA E. GIUNTA G. PETROLO M. BEAM STRUCTURES: CLASSICAL AND ADVANCED THEORIES (2011) | 608 | 608 |
| 3 | CARRERA E. CINEFRA M. PETROLO M. ZAPPINO E. (2014) | 585 | 585 |
| 3 | REISSNER E. THE EFFECT OF TRANSVERSE SHEAR DEFORMATION ON THE BENDING OF ELASTIC PLATES (1945) | 578 | 578 |
| Knowledge Base 4: KB 4 (n = 583, density =6.53) | |||
| 4 | TANAKA T. OSUKA A. (2015) | 770 | 815 |
| 4 | ETHIRAJAN M. CHEN Y. JOSHI P. PANDEY R.K. (2011) | 759 | 851 |
| 4 | TSUDA A. OSUKA A. (2001) | 742 | 758 |
| 4 | MORI H. TANAKA T. OSUKA A. (2013) | 629 | 641 |
| 4 | LEWTAK J.P. GRYKO D.T. (2012) | 516 | 522 |
| 4 | GRZYBOWSKI M. SKONIECZNY K. BUTENSCHÖN H. GRYKO D.T. (2013) | 395 | 395 |
| 4 | ARATANI N. KIM D. OSUKA A. (2009) | 362 | 368 |
| 4 | FOX S. BOYLE R.W. (2006) | 345 | 345 |
| 4 | DAVIS N.K.S. THOMPSON A.L. ANDERSON H.L. (2011) | 328 | 334 |
| 4 | ANDERSON H.L. (1999) | 316 | 343 |
| Knowledge Base 5: KB 5 (n = 466, density =15.06) | |||
| 5 | O’REGAN B. GRÄTZEL M. (1991) | 1366 | 1378 |
| 5 | HIGASHINO T. IMAHORI H. (2015) | 1256 | 1311 |
| 5 | HAGFELDT A. BOSCHLOO G. SUN L. KLOO L. PETTERSSON H. (2010) | 1225 | 1231 |
| 5 | MATHEW S. YELLA A. GAO P. HUMPHRY-BAKER R. CURCHOD B.F.E. ASHARI-ASTANI N. TAVERNELLI I. GRÄTZEL M. (2014) | 1115 | 1219 |
| 5 | LI L.-L. DIAU E.W.-G. (2013) | 1067 | 1230 |
| 5 | URBANI M. GRÄTZEL M. NAZEERUDDIN M.K. TORRES T. (2014) | 1058 | 1115 |
| 5 | IMAHORI H. UMEYAMA T. ITO S. (2009) | 975 | 991 |
| 5 | YELLA A. LEE H.-W. TSAO H.N. YI C. CHANDIRAN A.K. NAZEERUDDIN M.K. DIAU E.W.-G. GRÄTZEL M. (2011) | 867 | 889 |
| 5 | YELLA A. MAI C.-L. ZAKEERUDDIN S.M. CHANG S.-N. HSIEH C.-H. YEH C.-Y. GRÄTZEL M. (2014) | 624 | 627 |
| 5 | MISHRA A. FISCHER M.K.R. BÄUERLE P. (2009) | 465 | 465 |
| Knowledge Base 6: KB 6 (n = 443, density =7.8) | |||
| 6 | LI L.-L. DIAU E.W.-G. PORPHYRIN-SENSITIZED SOLAR CELLS (2013) | 729 | 741 |
| 6 | HAGFELDT A. BOSCHLOO G. SUN L. KLOO L. PETTERSSON H. DYE-SENSITIZED SOLAR CELLS (2010) | 662 | 670 |
| 6 | URBANI M. GRÄTZEL M. NAZEERUDDIN M.K. TORRES T. MESO-SUBSTITUTED PORPHYRINS FOR DYE-SENSITIZED SOLAR CELLS (2014) | 615 | 619 |
| 6 | MATHEW S. YELLA A. GAO P. HUMPHRY-BAKER R. CURCHOD B.F.E. ASHARI-ASTANI N. TAVERNELLI I. GRÄTZEL M. DYE-SENSITIZED SOLAR CELLS WITH 13% EFFICIENCY … | 592 | 597 |
| 6 | O’REGAN B. GRÄTZEL M. A LOW-COST HIGH-EFFICIENCY SOLAR CELL BASED ON DYE-SENSITIZED COLLOIDAL TIO2 FILMS (1991) | 523 | 531 |
| 6 | ETHIRAJAN M. CHEN Y. JOSHI P. PANDEY R.K. THE ROLE OF PORPHYRIN CHEMISTRY IN TUMOR IMAGING AND PHOTODYNAMIC THERAPY (2011) | 503 | 507 |
| 6 | HIGASHINO T. IMAHORI H. PORPHYRINS AS EXCELLENT DYES FOR DYE-SENSITIZED SOLAR CELLS: RECENT DEVELOPMENTS AND INSIGHTS (2015) | 472 | 472 |
| 6 | YELLA A. LEE H.-W. TSAO H.N. YI C. CHANDIRAN A.K. NAZEERUDDIN M.K. DIAU E.W.-G. GRÄTZEL M. PORPHYRIN-SENSITIZED SOLAR CELLS WITH COBALT (II/III) | 337 | 337 |
| 6 | YAO Z. ZHANG M. WU H. YANG L. LI R. WANG P. DONOR/ACCEPTOR INDENOPERYLENE DYE FOR HIGHLY EFFICIENT ORGANIC DYE-SENSITIZED SOLAR CELLS (2015) | 226 | 226 |
| 6 | SONG H. LIU Q. XIE Y. PORPHYRIN-SENSITIZED SOLAR CELLS: SYSTEMATIC MOLECULAR OPTIMIZATION COADSORPTION AND COSENSITIZATION (2018) | 193 | 196 |
In a co-cittion network, the strength of the relationship between a reference pair \(m\) and \(n\) (\(s_{m,n}^{coc}\)) is expressed by the number of publications \(C\) which are jointly citing reference \(m\) and \(n\).
\[s_{m,n}^{coc} = \sum_i c_{i,m} c_{i,n}\]
The intuition here is that references which are frequently cited together are likely to share commonalities in theory, topic, methodology, or context. It can be interpreted as a measure of similarity as evaluated by other researchers that decide to jointly cite both references. Because the publication process is time-consuming, co-citation is a backward-looking measure, which is appropriate to map the relationship between core literature of a field.
This is arguably the more interesting part. Here, we identify the
literature’s current knowledge frontier by carrying out a bibliographic
coupling analysis of the publications in our corpus. This measure uses
bibliographical information of publications to establish a similarity
relationship between them. Again, method details to be found in the tab
Technical description. As you will see, we identify the
main research area, but also a set of adjacent research areas with some
theoretical/methodological/application overlap.
To identify communities in the field’s knowledge frontier (labeled research areas) we again use the Lovain Algorithm (Blondel et al., 2008). We identify the following communities = research areas.
| com_name | AU | PY | TI | dgr_int | TC | TC_year |
|---|---|---|---|---|---|---|
| Research Area 1: RA 1 (n = 1140, density =2.1) | ||||||
| RA 1 | WANG Z;GRESCH D;SOLUYA… | 2016 | MOTE2: A TYPE-II WEYL TOPOLOGICAL METAL | 32.6758154 | 318 | 53.000000 |
| RA 1 | HINUMA Y;PIZZI G;KUMAG… | 2017 | BAND STRUCTURE DIAGRAM PATHS BASED ON CRYSTALLOGRAPHY | 39.9129643 | 256 | 51.200000 |
| RA 1 | OTROKOV MM;RUSINOV IP;… | 2019 | UNIQUE THICKNESS-DEPENDENT PROPERTIES OF THE VAN DER WAALS INTERLAYER ANTIFERROMAGNET MNBI2TE4 FILMS | 31.1020458 | 235 | 78.333333 |
| RA 1 | QIAO J;NING L;MOLOKEEV… | 2018 | EU2+ SITE PREFERENCES IN THE MIXED CATION K2BACA(PO4)2 AND THERMALLY STABLE LUMINESCENCE | 24.0019278 | 302 | 75.500000 |
| RA 1 | LEE J;SEKO A;SHITARA K… | 2016 | PREDICTION MODEL OF BAND GAP FOR INORGANIC COMPOUNDS BY COMBINATION OF DENSITY FUNCTIONAL THEORY CALCULATIONS AND MACHINE … | 38.7317584 | 185 | 30.833333 |
| RA 1 | STEINER S;KHMELEVSKYI … | 2016 | CALCULATION OF THE MAGNETIC ANISOTROPY WITH PROJECTED-AUGMENTED-WAVE METHODOLOGY AND THE CASE STUDY OF DISORDERED FE1-XCOX… | 37.4671718 | 189 | 31.500000 |
| RA 1 | KYRTSOS A;MATSUBARA M;… | 2018 | ON THE FEASIBILITY OF P-TYPE GA2O3 | 40.8406776 | 151 | 37.750000 |
| RA 1 | MORIWAKE H;KUWABARA A;… | 2017 | WHY IS SODIUM-INTERCALATED GRAPHITE UNSTABLE? | 44.9982805 | 125 | 25.000000 |
| RA 1 | YORULMAZ U;ÖZDEN A;PER… | 2016 | VIBRATIONAL AND MECHANICAL PROPERTIES OF SINGLE LAYER MXENE STRUCTURES: A FIRST-PRINCIPLES INVESTIGATION | 40.5999635 | 138 | 23.000000 |
| RA 1 | SEKO A;HAYASHI H;NAKAY… | 2017 | REPRESENTATION OF COMPOUNDS FOR MACHINE-LEARNING PREDICTION OF PHYSICAL PROPERTIES | 34.4883044 | 151 | 30.200000 |
| Research Area 2: RA 2 (n = 999, density =2.05) | ||||||
| RA 2 | VAN SETTEN MJ;GIANTOMA… | 2018 | THE PSEUDODOJO: TRAINING AND GRADING A 85 ELEMENT OPTIMIZED NORM-CONSERVING PSEUDOPOTENTIAL TABLE | 18.6764871 | 437 | 109.250000 |
| RA 2 | DING W;ZHU J;WANG Z;GA… | 2017 | PREDICTION OF INTRINSIC TWO-DIMENSIONAL FERROELECTRICS IN IN 2 SE 3 AND OTHER III 2 -VI 3 VAN DER WAALS MATERIALS | 16.1845065 | 439 | 87.800000 |
| RA 2 | JI D;CAI S;PAUDEL TR;S… | 2019 | FREESTANDING CRYSTALLINE OXIDE PEROVSKITES DOWN TO THE MONOLAYER LIMIT | 26.6533781 | 191 | 63.666667 |
| RA 2 | LEE J-H;BRISTOWE NC;LE… | 2016 | RESOLVING THE PHYSICAL ORIGIN OF OCTAHEDRAL TILTING IN HALIDE PEROVSKITES | 29.0855016 | 155 | 25.833333 |
| RA 2 | SEIXAS L;RODIN AS;CARV… | 2016 | MULTIFERROIC TWO-DIMENSIONAL MATERIALS | 31.2168023 | 138 | 23.000000 |
| RA 2 | KIM TH;PUGGIONI D;YUAN… | 2016 | POLAR METALS BY GEOMETRIC DESIGN | 19.2032497 | 206 | 34.333333 |
| RA 2 | TIAN S;ZHANG J-F;LI C;… | 2019 | FERROMAGNETIC VAN DER WAALS CRYSTAL VI3 | 42.5701445 | 90 | 30.000000 |
| RA 2 | ZHAO M;XIA Z;HUANG X;N… | 2019 | LI SUBSTITUENT TUNING OF LED PHOSPHORS WITH ENHANCED EFFICIENCY, TUNABLE PHOTOLUMINESCENCE, AND IMPROVED THERMAL STABILITY | 29.1937022 | 121 | 40.333333 |
| RA 2 | YE W;CHEN C;WANG Z;CHU… | 2018 | DEEP NEURAL NETWORKS FOR ACCURATE PREDICTIONS OF CRYSTAL STABILITY | 24.0021775 | 130 | 32.500000 |
| RA 2 | BEECHER AN;SEMONIN OE;… | 2016 | DIRECT OBSERVATION OF DYNAMIC SYMMETRY BREAKING ABOVE ROOM TEMPERATURE IN METHYLAMMONIUM LEAD IODIDE PEROVSKITE | 17.0375223 | 173 | 28.833333 |
| Research Area 3: RA 3 (n = 477, density =0.41) | ||||||
| RA 3 | PAGANI A;DE MIGUEL AG;… | 2016 | ANALYSIS OF LAMINATED BEAMS VIA UNIFIED FORMULATION AND LEGENDRE POLYNOMIAL EXPANSIONS | 7.1534837 | 77 | 12.833333 |
| RA 3 | PAGANI A;CARRERA E | 2017 | LARGE-DEFLECTION AND POST-BUCKLING ANALYSES OF LAMINATED COMPOSITE BEAMS BY CARRERA UNIFIED FORMULATION | 3.0918162 | 109 | 21.800000 |
| RA 3 | PAGANI A;CARRERA E | 2018 | UNIFIED FORMULATION OF GEOMETRICALLY NONLINEAR REFINED BEAM THEORIES | 3.0823137 | 97 | 24.250000 |
| RA 3 | CARRERA E;DE MIGUEL AG… | 2017 | HIERARCHICAL THEORIES OF STRUCTURES BASED ON LEGENDRE POLYNOMIAL EXPANSIONS WITH FINITE ELEMENT APPLICATIONS | 6.0912697 | 49 | 9.800000 |
| RA 3 | NEJAD MZ;HADI A | 2016 | NON-LOCAL ANALYSIS OF FREE VIBRATION OF BI-DIRECTIONAL FUNCTIONALLY GRADED EULER-BERNOULLI NANO-BEAMS | 1.6356711 | 169 | 28.166667 |
| RA 3 | NEJAD MZ;HADI A;RASTGOO A | 2016 | BUCKLING ANALYSIS OF ARBITRARY TWO-DIRECTIONAL FUNCTIONALLY GRADED EULER-BERNOULLI NANO-BEAMS BASED ON NONLOCAL ELASTICITY… | 1.1727529 | 220 | 36.666667 |
| RA 3 | DAN M;PAGANI A;CARRERA E | 2016 | FREE VIBRATION ANALYSIS OF SIMPLY SUPPORTED BEAMS WITH SOLID AND THIN-WALLED CROSS-SECTIONS USING HIGHER-ORDER THEORIES BA… | 7.5675455 | 34 | 5.666667 |
| RA 3 | YAN Y;PAGANI A;CARRERA E | 2017 | EXACT SOLUTIONS FOR FREE VIBRATION ANALYSIS OF LAMINATED, BOX AND SANDWICH BEAMS BY REFINED LAYER-WISE THEORY | 8.1243500 | 31 | 6.200000 |
| RA 3 | XU X;FALLAHI N;YANG H | 2020 | EFFICIENT CUF-BASED FEM ANALYSIS OF THIN-WALL STRUCTURES WITH LAGRANGE POLYNOMIAL EXPANSION | 4.9756137 | 41 | 20.500000 |
| RA 3 | FILIPPI M;CARRERA E | 2016 | BENDING AND VIBRATIONS ANALYSES OF LAMINATED BEAMS BY USING A ZIG-ZAG-LAYER-WISE THEORY | 4.5267744 | 45 | 7.500000 |
| Research Area 4: RA 4 (n = 458, density =0.31) | ||||||
| RA 4 | JI J-M;ZHOU H;KIM HK | 2018 | RATIONAL DESIGN CRITERIA FOR D-Π-A STRUCTURED ORGANIC AND PORPHYRIN SENSITIZERS FOR HIGHLY EFFICIENT DYE-SENSITIZED SOLAR … | 4.0734215 | 169 | 42.250000 |
| RA 4 | JI J-M;ZHOU H;EOM YK;K… | 2020 | 14.2% EFFICIENCY DYE-SENSITIZED SOLAR CELLS BY CO-SENSITIZING NOVEL THIENO[3,2-B]INDOLE-BASED ORGANIC DYES WITH A PROMISIN… | 4.4883505 | 129 | 64.500000 |
| RA 4 | TINGARE YS;VINH NS;CHO… | 2017 | NEW ACETYLENE-BRIDGED 9,10-CONJUGATED ANTHRACENE SENSITIZERS: APPLICATION IN OUTDOOR AND INDOOR DYE-SENSITIZED SOLAR CELLS | 5.1872676 | 105 | 21.000000 |
| RA 4 | WU W;MAO D;HU F;XU S;C… | 2017 | A HIGHLY EFFICIENT AND PHOTOSTABLE PHOTOSENSITIZER WITH NEAR-INFRARED AGGREGATION-INDUCED EMISSION FOR IMAGE-GUIDED PHOTOD… | 1.9815177 | 264 | 52.800000 |
| RA 4 | SONG H;LIU Q;XIE Y | 2018 | PORPHYRIN-SENSITIZED SOLAR CELLS: SYSTEMATIC MOLECULAR OPTIMIZATION, COADSORPTION AND COSENSITIZATION | 4.5038955 | 113 | 28.250000 |
| RA 4 | ZHANG A;LI C;YANG F;ZH… | 2017 | AN ELECTRON ACCEPTOR WITH PORPHYRIN AND PERYLENE BISIMIDES FOR EFFICIENT NON-FULLERENE SOLAR CELLS | 1.7103103 | 209 | 41.800000 |
| RA 4 | WANG C-L;ZHANG M;HSIAO… | 2016 | PORPHYRINS BEARING A CONSOLIDATED ANTHRYL DONOR WITH DUAL FUNCTIONS FOR EFFICIENT DYE-SENSITIZED SOLAR CELLS | 6.9432504 | 50 | 8.333333 |
| RA 4 | LI C;LUO L;WU D;JIANG … | 2016 | PORPHYRINS WITH INTENSE ABSORPTIVITY: HIGHLY EFFICIENT SENSITIZERS WITH A PHOTOVOLTAIC EFFICIENCY OF UP TO 10.7% WITHOUT A… | 5.9730554 | 49 | 8.166667 |
| RA 4 | LIU Y-C;CHOU H-H;HO F-… | 2016 | A FEASIBLE SCALABLE PORPHYRIN DYE FOR DYE-SENSITIZED SOLAR CELLS UNDER ONE SUN AND DIM LIGHT ENVIRONMENTS | 3.9554411 | 72 | 12.000000 |
| RA 4 | DI CARLO G;BIROLI AO;T… | 2018 | Β-SUBSTITUTED ZNII PORPHYRINS AS DYES FOR DSSC: A POSSIBLE APPROACH TO PHOTOVOLTAIC WINDOWS | 4.1969495 | 59 | 14.750000 |
| Research Area 5: RA 5 (n = 235, density =0.39) | ||||||
| RA 5 | KURUMISAWA Y;HIGASHINO… | 2019 | RENAISSANCE OF FUSED PORPHYRINS: SUBSTITUTED METHYLENE-BRIDGED THIOPHENE-FUSED STRATEGY FOR HIGH-PERFORMANCE DYE-SENSITIZE… | 2.4357164 | 125 | 41.666667 |
| RA 5 | HIGASHINO T;KAWAMOTO K… | 2016 | EFFECTS OF BULKY SUBSTITUENTS OF PUSH-PULL PORPHYRINS ON PHOTOVOLTAIC PROPERTIES OF DYE-SENSITIZED SOLAR CELLS | 4.2394464 | 51 | 8.500000 |
| RA 5 | LU Y;SONG H;LI X;ÅGREN… | 2019 | MULTIPLY WRAPPED PORPHYRIN DYES WITH A PHENOTHIAZINE DONOR: A HIGH EFFICIENCY OF 11.7% ACHIEVED THROUGH A SYNERGETIC COADS… | 2.4822110 | 66 | 22.000000 |
| RA 5 | KLFOUT H;STEWART A;ELK… | 2017 | BODIPYS FOR DYE-SENSITIZED SOLAR CELLS | 1.5589305 | 97 | 19.400000 |
| RA 5 | YANG G;TANG Y;LI X;ÅGR… | 2017 | EFFICIENT SOLAR CELLS BASED ON PORPHYRIN DYES WITH FLEXIBLE CHAINS ATTACHED TO THE AUXILIARY BENZOTHIADIAZOLE ACCEPTOR: SU… | 2.0185328 | 66 | 13.200000 |
| RA 5 | REDDY KSK;CHEN Y-C;WU … | 2018 | COSENSITIZATION OF STRUCTURALLY SIMPLE PORPHYRIN AND ANTHRACENE-BASED DYE FOR DYE-SENSITIZED SOLAR CELLS | 2.6874125 | 47 | 11.750000 |
| RA 5 | WU W;MAO D;XU S;KENRY;… | 2018 | POLYMERIZATION-ENHANCED PHOTOSENSITIZATION | 0.9257428 | 129 | 32.250000 |
| RA 5 | KRISHNA NV;KRISHNA JVS… | 2017 | DONOR-Π-ACCEPTOR BASED STABLE PORPHYRIN SENSITIZERS FOR DYE-SENSITIZED SOLAR CELLS: EFFECT OF Π-CONJUGATED SPACERS | 1.3656442 | 84 | 16.800000 |
| RA 5 | ZENG K;CHEN Y;ZHU W-H;… | 2020 | EFFICIENT SOLAR CELLS BASED ON CONCERTED COMPANION DYES CONTAINING TWO COMPLEMENTARY COMPONENTS: AN ALTERNATIVE APPROACH F… | 1.1464365 | 96 | 48.000000 |
| RA 5 | YANG Y;WANG L;CAO H;LI… | 2019 | PHOTODYNAMIC THERAPY WITH LIPOSOMES ENCAPSULATING PHOTOSENSITIZERS WITH AGGREGATION-INDUCED EMISSION | 1.1281254 | 87 | 29.000000 |
| Research Area 6: RA 6 (n = NA, density =NA) | ||||||
| NA | GONNISSEN J;BATUK D;NA… | 2016 | DIRECT OBSERVATION OF FERROELECTRIC DOMAIN WALLS IN LINBO3: WALL-MEANDERS, KINKS, AND LOCAL ELECTRIC CHARGES | 4.3594863 | 54 | 9.000000 |
| NA | PAILLARD C;BAI X;INFAN… | 2016 | PHOTOVOLTAICS WITH FERROELECTRICS: CURRENT STATUS AND BEYOND | 0.8081700 | 208 | 34.666667 |
| NA | DAS S;TANG YL;HONG Z;G… | 2019 | OBSERVATION OF ROOM-TEMPERATURE POLAR SKYRMIONS | 0.3433380 | 225 | 75.000000 |
| NA | ZUBKO P;WOJDEL JC;HADJ… | 2016 | NEGATIVE CAPACITANCE IN MULTIDOMAIN FERROELECTRIC SUPERLATTICES | 0.3668593 | 210 | 35.000000 |
| NA | NATAF GF;GUENNOU M;KRE… | 2017 | CONTROL OF SURFACE POTENTIAL AT POLAR DOMAIN WALLS IN A NONPOLAR OXIDE | 4.9315838 | 15 | 3.000000 |
| NA | SALJE EKH;ALEXE M;KUST… | 2016 | DIRECT OBSERVATION OF POLAR TWEED IN LAALO3 | 1.7404915 | 39 | 6.500000 |
| NA | YADAV AK;NGUYEN KX;HON… | 2019 | SPATIALLY RESOLVED STEADY-STATE NEGATIVE CAPACITANCE | 0.4600869 | 139 | 46.333333 |
| NA | DAMODARAN AR;CLARKSON … | 2017 | PHASE COEXISTENCE AND ELECTRIC-FIELD CONTROL OF TOROIDAL ORDER IN OXIDE SUPERLATTICES | 0.5528578 | 104 | 20.800000 |
| NA | PORCARELLI L;ABOUDZADE… | 2017 | SINGLE-ION TRIBLOCK COPOLYMER ELECTROLYTES BASED ON POLY(ETHYLENE OXIDE) AND METHACRYLIC SULFONAMIDE BLOCKS FOR LITHIUM ME… | 0.4962928 | 80 | 16.000000 |
| NA | NATAF GF;GUENNOU M | 2020 | OPTICAL STUDIES OF FERROELECTRIC AND FERROELASTIC DOMAIN WALLS | 2.0081678 | 18 | 9.000000 |
In a bibliographic coupling network, the coupling-strength between publications is determined by the number of commonly cited references they share, assuming a common pool of references to indicate similarity in context, methods, or theory. Formally, the strength of the relationship between a publication pair \(i\) and \(j\) (\(s_{i,j}^{bib}\)) is expressed by the number of commonly cited references.
\[s_{i,j}^{bib} = \sum_m c_{i,m} c_{j,m}\]
Since our corpus contains publications which differ strongly in terms of the number of cited references, we normalize the coupling strength by the Jaccard similarity coefficient. Here, we weight the intercept of two publications’ bibliography (shared refeences) by their union (number of all references cited by either \(i\) or \(j\)). It is bounded between zero and one, where one indicates the two publications to have an identical bibliography, and zero that they do not share any cited reference. Thereby, we prevent publications from having high coupling strength due to a large bibliography (e.g., literature surveys).
\[S_{i,j}^{jac-bib} =\frac{C(i \cap j)}{C(i \cup j)} = \frac{s_{i,j}^{bib}}{c_i + c_j - s_{i,j}^{bib}}\]
More recent articles have a higher pool of possible references to co-cite to, hence they are more likely to be coupled. Consequently, bibliographic coupling represents a forward looking measure, and the method of choice to identify the current knowledge frontier at the point of analysis.
All results are preliminary so far…